You can find a lot searching on used book sites. For instance your 1902 "The Rough Riders" is a second edition. Not particularly valuable unless there is something special, like if it was signed or something. Probably retail for $20-$40. First edition would be worth quite a bit more, but a lot depends on binding, condition and such.
http://www.usedbooksearch.co.uk
is a good place to search.
Many copies of Boners of that edition are available under $10.00
http://www.abebooks.com/servlet/SearchResults?bi=Any+Binding&ds=25&kn=1931&tn=boners
IA http://www.abebooks.com/servlet/SearchResults?bi=Any+Binding&ds=25&kn=1931&tn=boners
Marv
http://www.usedbooksearch.co.uk
is a good place to search.
Many copies of Boners of that edition are available under $10.00
http://www.abebooks.com/servlet/SearchResults?bi=Any+Binding&ds=25&kn=1931&tn=boners
IA http://www.abebooks.com/servlet/SearchResults?bi=Any+Binding&ds=25&kn=1931&tn=boners
Marv
